Das, Gouranga; Nath, Hiranya; Yildiz, Halis Murat - In: International Economic Journal 23 (2009) 1, pp. 121-142
This paper calculates Theil's entropy index to measure the extent of productivity differences across 92 countries for the period from 1970 to 2003. While there is evidence of increasing differences in productivity across these countries, we observe different patterns when we group the countries...